croft



(No Model.) 13 Sheets-Sheet 1.

E. CROFT, Deod.

M. CROFT, Administramx. MACHINE FOR FINISHING HORSESHOE NAILS.

No. 329,538. Patented Nov. 3, 1885.

VIM/755555 0%! (EA/M44 1 45 N PETERS. Phowumo n w, Wuhmglnn. n. c.

(No Model.)

2 LIU e e h S S t e e h S 3 1 H m Y. m T m PM m 0 Cu E MACHINE FOR FINISHING HORSESHOE NAILS. No. 329,538.

(N0 Mudel.) Y 13 Sheets-Sheet 3. E. CROFT, Deod.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS.

8 MM/ham 13 Sheets-Sheet 4.

E. CROFT, Decd.

(No Model.)

M. CROFT, Administratrix. MACHINE 'FOR FINISHING HORSESHOE NAILS.

Pate 0v.

mll Hn 'Ilmm Wm,

(No Model.) 13 SheetsSheet 5.

4 E. CROFT, Decd.

M. CROFT, Administratrix. MACHINE FOR FIQISHINQ HORSESHOE NAILS. No. 329,538. Q, Patented Nov. 3, 1885.

(No Model.) 13 Sheets-Sheet 6. E. CROFT, Deod. M CROFT Admmlstratnx MACHINE FOR FINISHING HORSESHOE NAILS. No. 329,538.

Patented Nov. 3, 1885.

And /7hr, 40M! if W/k/reayea N. PETEII. Phuwlx (No Model.) 13 Sheets-Sheet 7. E. CROFT, Decd.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS.

N0. 329,538. Patented Nov. 3, 1885.

(No Model.) 13 SheetsSheet 8.

E. CROFT, Decd.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS.

No. 329,538, Patented Nov. 3, 1885.

% W JA MQ N. PETERS. Phulo uma nu. Wnlhiniton. n, c

(No Model.) 13 Sheets-Sheet 9. E. CROFT, Deod.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS. No. 329,538.

u. PEYKRS. Plwlo-Lnllvogmphar. wnlhinglon. no.

(No Model.) 13 SheetsSheet 10.

E. CROFT, Deod.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS.

N0. 329,538. Patented Nov. 3, 1885.

(No Model.) 13 Sheets-Sheet 11.

E. CROFT, Decd.

M. CROFT, Administratrix. MAGHIN-EPOR FINISHING HORSESHOE NAILS.

No. 329,538. Patented Nov. 3, 1885.

5 Emil! g Fin 4297555255, Avg/gafar,

(No Model.) 13 SheetsSheet 12.

E. CROFT, Decd.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS. No. 329,538.

MOE/755555, I /m/ 0127a. 05% dwm 4M424 AW Omaha M- t a; @Az wmv N PETERS. Phowumn m mr. Wnslungtnn, D. C.

(No Model.) 13 SheetsSheet 13.

E. CROFT, Deod.

M. CROFT, Administratrix. MACHINE FOR FINISHING HORSESHOE NAILS.

No. 329,538. Patented Nov. 3, 1885.

Agni?) is i m m H H13 S ]-/r H L W I a T .23 I

lJ-d

. 6 @"nme/mm 9 1442055555, 2 zmmwzlz @Q Z E 3?.-

lublhngmphnr. Wulhmglml, D. C.

UNITED STATES PATENT CFEicE.

EDWARD CROFT, OF VATERBURY, CONN.; MARGARET CROFT (ADMIN ISTRA TRIX OF SAID EDlVARD CROFT, DECEASED) ASSIGNOR TO JAMES SHEP- ARD, OF NEWV BRITAIN, CONN.

MACHINE FOR FINISHING HORSESHOE-NAILS.

SPECIFICATION forming part of Letters Patent No. 329,538, dated November 3, 1885.

ApplicatiOn filed January 5,1885. Serial No. 151,983. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD CROFT, a citizen of the United States, residing at WVaterbury, in the county of New Haven and State of Connecticut, haveinvented certain new and useful Improvements in Machines for Finishing Horseshoe-Nails, of which the following is a specification.

My invention relates to improvements in ma- 1O chines forfinishing horseshoe-nails. In my machine the nails, after forging, are passed one by one through a hole in a table, and then,by means of a series of fingers,passed through a series of rolls for coldrolling and delivered tojaws with I5 inanintermittently;revolvinghead. Thenthey are presented to punching mechanism, which trims the point, then to an emery or grinding wheel, which grinds the upper side of the nail at the point, then to a reciprocating burr or file, which smooths off the edges, then over another polishing or grinding wheel to remove any burr and smooth the under side of the nail-point, and, finally, they are driven into a die to straighten them edgewise and curve them fiatwise, and then they are discharged from the machine.

The objects of my invention are to thus finish nails automatically and to finish them well; and the invention consists in the mechanismand mechanisms which I employ for this purpose, either for all of the several operations named or for any number less than the whole.

In the accompanying drawings, Figure 1 is a partial horizontal section on linear or of Fig. 2, together with a plan view of the main parts of my machine. Fig. 2 is a side elevation of the same. Fig. 3 is a rear elevation, but with a rear driving-shaft removed in order to more 0 clearly represent the other parts. Fig. 4 is a vertical section through the series of rollerdies, the plane of section being indicated by line 131 in Fig. 1, said figure being represented upon twice as large a scale as the preceding figures. Fig. 5 is avertical section, partly in elevation, of the rear part of the machine, taken upon the same line 3 y of Fig. 1, and represented upon a scale twice the size of Fig. 1. Fig. 6 is a partial horizontal section and plan view of one pair of jaws, the intermittentlyrevolving head, oscillating plate, and

mechanism for driving the same, the parts being represented upon the same scale as in Figs. 4 and 5. Fig. 7 is a central vertical section, partly in elevation, on the same scale as Fig. 6, of the mechanism for trimming the points of the nails. Fig. 7 is a detached side elevation of the slide H and angle-lever H, the same being represented with the slide at the upper end of its stroke and upon a scale four times as large as that employed in Fig. 1. Fig. 8 is a reversed plan view of the trimmingdie. Fig. 9 is a plan view of the punch belonging thereto, said figures being represented upon a scale four times the size of Fig. 1. Fig. 10 is a front elevation or end view of the jaws for filing the edge of the nail, and a vertical section of the oscillating cam-plate for raising and lowering said jaws, the parts be-- ing represented upon the same scale as in Figs. 8 and 9. Fig. 11 is a partial section and plan view, upon the same scale, of the die for straightening and curving the nail. Fig. 12 is a vertical section, partly in elevation, of said die and its punch, said parts be- 7 ing represented on a scale twice that of Fig.

1. Fig. 13 is a reversed plan view of the punching and swaging tool. Fig. 14 is'a plan view of the die belonging thereto, said parts being represented upon a scale four times as large as that of Fig. 1. Fig. 14 is a horizontal section, upon the same scale, of one of the guides belonging to said die. Fig. 15 is a side elevation showing mainly the mechanism for lifting the swaging-die follower, the parts he ing represented upon the same scale as in Fig.

12. Fig. 15 is a side view of the end of the operating-lever and its cams, represented upon the same scale as the parts in Fig. 1. Fig. 16

is a plan view of one pair of conveying-fingers which operate in connection with the rollerdies. Fig. 17 is a side elevation of the same. Fig. 18 is a front elevation of the same. Fig.

19 is a plan view of the table and the orifice through which the nails are inserted into the 5 machine, said Figs. 16, 17, 18, and 19 being represented upon a scale four times as large as that of Fig. 1. Fig. 20 is a plan View of the conveyer which first receives the nails from the table, Fig. 19. Fig. 21 is a central ver- :00 tical section of the same, partly in elevation, together with the table, Fig. 19, in proper cured to a reciprocating rack, B, and when drawn backv into the position represented byv position over the same, the parts in these Figs. 20 and 21 being. represented. upon a scale twice the size of that of Fig. 1. Fig. 22 is a reversed plan view of the mechanism which gages the points of the nails for trimmingand which carries the .punchings away fromthe die. represented as at the other end of their stroke, said parts being represented upon a scale four times the size of that employed in Fig. 1; and Fig. 24 is a plan view of the parts represented in Fig. 20, upon the same scale, but in another position of their movement. V

The nails, after having been forged previously by any suitable machine, are placedpromiscuously upon the table A, and are dropped one by onethrough the orifice a by slipping them head first down upon the inclines b, Figs. 19 and 21,whereby they cannot fallthrough the table until their heads slip off the lower ends of the inclines I), at which time the point of the nail will be carried so far forward as to be brought over the space between said inclines, whereby thenail falls flatwise through the'table. A pair of spring-jawsc, Figs. 20, 21, and 24, are se the broken lines in Fig. 20, the jaws are forced open by means of the inclined lugs d,

'Thenail falls with its'body between these jaws, and with its head just inside of the gages e, with the flat side of thehead resting upon the pivoted jaws e. These gagese prevent the nail from jumping forward too far as it drops through the table. As the rack moves forward, the jaws 0 slip off the inclines d and grasp thenail. Their tapering noses then.

' come in contact with thepivoted jaws e and force them open, so as to carry the gagese out of the path of the nail-head and to carry the parts'into the position represented in Fig. 24, thereby presenting the nail-head firstto a se.

- ries of roller-dies, 0, arranged in pairs upon shafts D at right angles to each other. Each of these roller-dies has die grooves or recesses in it to correspond to the form of the nail. The conveyer, Fig. 20, moves toward these dies, so as to presentthe head of the; nail in place for the "die-recess for the-head, some;

time before the pair of recesses which are to receive the head come together, and (the mo;

tionof the rack carrying the conveyer isfast.

enough to keep the nail-headpressed firmly into the largest part. of thedie-recess and to follow itup until the die-rollers take afirm hold upon thenail. 'The rollers then pull the nail fromthe 'conveye'r and the conveyer retreats.

- Gages f may be placed upon the front side of the roller-dies, and upon"each. side thereof to guide the headofthe nail properlyinto the die-recess, The vertical shaft E is connected bygearing to the driving-shaft, or with gears upon the vertical shafts carrying die-rol 1er s,

Upon the upper end of this shaft is a revolving plate, E, having upon its under side the m-groove, as indicated by v the broken line Fig. 23 is a like view of the same parts in Fig. 1, which groove receives the pin upon the sliding arm 9 to reciprocate it back and forth, said arm having secured toit the lever end of this lever g is slotted and connected to the reciprocating finger-bar F, so as to reciprocateit back and forth at every revolution of the cam-plate E. The outer end of the fingerbar F is secured to the vibrating arm F, having a circular rack upon its end, which meshesinto the rack B. The lower end of this oscillating arm F is pivoted to a bracket, F upon the framing of the, machine, so that as the finger-bar F reciprocates an oscillating movement is imparted to the arm F, whereby therack B, which carries the conveyer, Fig. 20, is driven. The finger-bar F carries a series of spring-fingers, h, thesame being mounted upon two sides of a stationary support or rest, h, said fingers being shownas connected with the bar in Fig. 4:, arranged in proper relative position to each other, while a single pair 'of fingers detached from the rest are represented in Figs. 16, 17, and 18. At the rear side of each roll is an oscillating arm, If, the same being pivoted to the framing'of the machine and pressed continually into the position in which they are represented in Fig. 4

by means of a spring. which spring is not shown, said arms being provided with a suitable stopJof any kind to limit their motion toward the front of the machine to the position shown, while theyare free to swing in the opposite direction whenever they are pressed upon sufficiently to overcome the power of their springs. When the finger-bar and fingers move inward,the spring-fingers strike the swinging arms If and swing them inward until the fingers have passed by them, after which they immediately snap into theposition represented in Fig. 4, but with the several fingers upon the opposite side of their ends from that represented in said figure. Upon the return of the finger-bar and the fingers the lower. ends of the swinging pieces h come in between the fingers h, and as said pieces cannot swing back- I ward any farther the jaws are forced open by being drawn pastsaid pieces h The fingers rcO are so related to the recesses in the die-rollers that a nail-head emerges from the die-rollers at a time when the swinging pieces 71. arespreading the fingers it open, and thereby per- .mit the head of the nail to pass through them.

Just after the nail-head has passed through these fingers they have moved far enough to 'slip off from the pieces h ,and the fingerssnap upon theuail to hold it firmly. At the next fcrward movement of the fingerbar the first pair of fingers carries the nail to the succeed' "ing pain of rollers, from which it is received by the second pair of fingers, and so on through the entire series.

In practice one nail will be fed into the machine f orevery reciprocating movement of the finger-bar F, so that when properly supplied,

and after the machine is under way, all of the fingers will be simultaneously operating upon a nail, and so with the various other parts of the machine; but for convenience of description I will only follow the movement of one nail as it passes through the machine. After passing the series of roller-dies,the nail is received by the last pair of fingers of the fingerbar F, and by them it is presented to one of the pairs of jaws it upon the intermittentlyrevolving head G, the head always being stopped with one pair of jaws in longitudinal alignment with the movement of the fingers and opened ready to receive the nail. These jaws k are hinged together at their inner ends, and are mounted upon a reciprocating slide, it. The pin projects upward from the slide between the jaws, and is pressed upon by means of a spring, if, having a constant tendency to force the slide and the jaws inward. Another spring, is, is connected with each pair of jaws to press on them with a constant tendency for forcing them open. The outer ends ofthese jaws are beve1ed,as clearly shown more particularly in Fig. 6, and they pass through an opening in the flange of the head G, the sides of which are correspondingly beveled. The pin 70", Fig. 5, extends downward from the bottom of the slide it, and is acted upon by the cams k and It, to reciprocate the slide it and its jaws. These cams k and 7c are located upon the central hub of the oscillating plate G which is immediately under the head G, and their contour is indicated by broken lines in Fig. 6. The mechanism for operating this head and plate is most clearly shown in Fig.6. The pitman Z is connected, by means of a bolt or crank-pin, to the upper side of the revolving disk or plate E upon shalt E, and also to the reciprocating slide Z, which it drives. At the end of the slide Z another pitman, Z, is secured, the opposite end of which pitman is connected to an arm, Z which is rigidly secured to and moves with the oscillating plate G", whereby said plate receives a reciprocating and oscil. lating movement for every revolution of the shaft E. The edge of the head G is toothed like a ratchet-wheel, as shown by the partial section in Fig. 6, and a spring-actuated hook, Z, engages this toothed portion of the head G, and imparts to it one-eighth of a revolution for every revolution of the shaft E. Aspringactuated dog, Z, snaps into a hole in the edge of the head G, and locks the head against a rotary movement at the end of each intermittent movement. In order to make this locking doubly sure and to have the dog Z" act quickly, the spring Z upon the oscillating arm Z is so arranged as to strike the heel of the I dog Z during the last part of the stroke of the slide Z. The movement of the oscillating plate G is such as to bring the point of the cam it back of the pin it, and to force the slide 70 outward, as shown in Fig. 6, and as indicated by the broken lines therein. This movement takes place at the end of the backward stroke of the slide Z, and at a time when the jaws are one-eighth of a revolution to the leftof the position represented in Fig. 6. The return of the slide Z carries the oscillating plate and the head G together into the position represented in said Fig. 6, when the movement of the head ceases, leaving the jaws forced outward, so as to allow their springs to throw them open into position ready to receive the head of the nail as it comes from the last pair of fingers upon the finger-bar F. The head of the nail passes between the jaws and up against the gage-pin It, so that the nail, when grasped, will be seizedby its body underneath the head. When the nail is thus locked within the jaws, the return movement of oscillating plate Gr begins and carries cam it away from the back of the pin it, and allows the jaws k to close upon the nail and grip it firmly. When the oscillating plate moves forward again,the head G makes one-eighth of a revolution and stops, at which point no operation is performed upon the nail. At the nextintermittent movement of the head the nail is brought around to the mechanism for trimming the points. In coming to this position the nail rides up the incline m to carry it to the top of the punch H under the die H, as shown in Figs. 7, 8, and 9. This die H is mounted in a slide, H, which is reciprocated by means of the lever H", whose motion is imparted to it by means ofa crank and pitman, H, upon the end H of one of the shafts of the die-rollers, as shown in Fig. l. The die H has within it a springpressed follower, H, Fig. 7, for the purpose of forcing the point of the nail out of the die after trimming. Upon the back side of the slide H is a secondary slide, H, the same being connected by means of a lever, H", to the slide H, so that while one slide is moving upward the other is moving'downward, and vice versa. The, lower end of this slide H acts upon the angle-lever H to throw it from the position represented in Fig. 7 into that represented in Fig. 7 ,whereby an oscillating front-to-rear movement is imparted to the lower end of the angle-lever H Said an l lever enters the slot in ahorizontally-moving slide, H whereby said slide is reciprocated for every movement of the slides H" H and the angle-lever H. This slide Hhas pivoted to it the pair ofjaws H. Just as the die descends to trim the point of the nail the slide H rises and the inclines thereon strike the points of the angle-lever H and throw the lower end thereof forward into the position represented in Fig. 7 thereby carrying the slide H and its jaws H forward into the position represented in Fig. 23, so that the jaws come upon each side of the point of the nail and properly center it over the die. I11 coming into this position the rear ends of the jaws engage the stationary incline H,which forces their outer ends together. When the punch ascends, the slide H" is moved in the opposite direction and carries the metal which has been trimmed off from the nail backward out of the way, and in moving back the enters ends of the .jaws'will comein' contact jwith the stationary posts H and force the jaws open, asshown in Fig. 22, when the punching will fall out of thejaws. The punching, or the piece of metal trimmed from the nail-point, is represented as within the jaws in Fig.,23. These jaws are put together in such a manner as to cause sufficient friction to make the jaws stay in whatever position they are placed, whereby the jaws retain theirhold upon the punching and carry it backward until the jaws-are opened. At the next intermittent movement of the head1G the nail is presented to the under side of the polishing-wheel K, said wheel being mounted to reciprocate back and forth upon any suitable carriage,

, belt caused-by the reciprocating movement of the carriage. The carriage upon which, the

grinding or emery wheel K is mounted isre-f ciprocated by means of the pin K", which enters the cam-slot K formed in the edge of the oscillating plate G. At the next intermittent movement of thehead G the nail is carried up over the inclined gage or rest L under the jaw L, and against the jaw L the jaw L being placed a little higher than jawL", as clearly shown in Fig. 10, so that the nail may be passed under the end of the jaw L in coming into position between the jaws, and ,out over the jaw L in leaving them. These jaws are toothed or roughened upon their flattened faces 7 to act as a burr-rasp or file, and they are pivotof the oscillatingplate G reciprocating carriage, L.

ed upon a slide, L, upon which they reciprocate horizontally. They are also pressed uporf by springs, with a constant tendency to force them together. a The slide L is reciprocated by means of an eccentric,L mounted upon the shaft L which is sustained upon brackets This same shaft also carries the driving-pulleys for the grinding and polishing wheels. This slide L and its jaws are mounted upon the vertically The movement is imparted to said carriage by means of the pin L entering an ob1iqueslot ,L, madeinthe edge As the nail comes up against the jaw L and under the jaw L, (said jaws continually reciprocating horizontally,) the oscillating movement of the plate G drives the carriage L downward, and thereby brings the nail gradually in between the jaws L" and L, when they file or rasp the edges ofthe' nail until the jaws descend so far as to bring the wheel M, the same being mounted upon a horien by the pulley M zontally-reciprocating carriage, M, and driv- This carriage M has its reciprocating movement imparted to it by :means'of the pinll/I in the cam-slot M formed on the edgeof the oscillating plate G The 'next intermittent .movement of the head G brings the nail into position directly opposite the dies for straightening the nail edgewise and curving it flatwise. Just about the time that it reaches said position the cam It upon the oscillating plate comes in contact with the pink of the slide and the jaws It, and-acts to open the jaws. the hook Z" comes in contact with the arm 0 upon the under side of the oscillating knock- ,outdever 0, thereby lifting theknockout-tiuger 0, 'so that it clears the jaws and rides up to a point directly over'the space between them. The spring 0? upon the oppositeend of'said lever causes the hooked finger 0 to pass down between the jaws with the point of its hook in the rear of the nail-head. As the said hook comes in contact with the arm-'0 on the knockout-lever and forces saidarm and lever in a direction to withdraw the nail from thejaws. This knocking-out lever 0 is hung upon a compound joint, so that it may oscillate both vertically and laterally, and" the springs 0 and 0 have a tendency to hold said lever in its normal position when it' is not acted upon by cams l or Z. The spring Z constitutes in effect an extension of the cam Z and makes an elastic cam. thus pulled out of thejaws, its point enters the guide 0 and falls upon the inclined table 0. Just in front or" the guide 0 is another guide, 0 carrying the shield o said guide being mounted upon a hinge by means of the screw or rivet 0 and actuated by a spring, 0 to hold it inthe position in-which it is represented in Fig. 11. This guide 0 is sufficiently elevated above the table 0 as to allow the nail-point to pass under it, while at the same time it is close enough to said table to prevent the nail-head from passing under said guide. The swaging-tool P is mounted upon the lower end of the slide P. It is actuated by the lever 1? and cam 1? upon the upper one of the shafts D of the roller-die nearest the intermittently-revolving head. The slide 1 is assisted in its'return by means of the spring P. A swaging die, P is mounted in a beveled' mouthed orifice in the inclined table 0, and has its upper surface curved to conform to the desired eurvatureto be given to the nail, and it is so mounted within its block as to swing upon the point p .as a fulcrum. By the side of this die is the slide It, connected to a slotted lever, B, which is actuated by cam R upon one of the rollershafts. (See Fig. 2.) This slide R is connected by-means of two links or swinging arms, p and p, to another slide, Pr; This latter slide R is bound in place by means of the friction spring p so firmly that it will not move in either direction, except when considerable force is applied to bear upon it. The stop 19 upon the link 10 coming in contact with the slide R limits the swinging movement of The cam Z (see Fig. 6) upon hook Z" continues its stroke; the cam l 'upon- When the nail is the arms p and p, so that when the slide'R is pressed upward and the stop p engages the slide It the further movement of the slide R necessitates an upward movement of the slidebar R with the slide R, and carries them into the position shown in Fig. 11. Vhen the slide R moves in the opposite direction, the pusher 19 upon the slide B, engaging the shield 0 as the slide swings laterally in moving backward, pushes the guide 0 sidewise far enough to liberate the nail, (which had been deposited upon the inclined table 0 above said guide, as before described,) and the end of the oscillating link 1) comes in behind the nail-head to push the nail down over the die P the links 1) and 19 being then brought down into the position indicated by the broken lines in Fig. 11. The nail will generally slide down the inclined table faster than the links 19 p, but if it is inclined to stick the link 1) will force it down. Whenever the nail moves faster in any part of its descent than the link 10, its point passes under said link, and the nail is thereby held down over the swaging orifice and die 1?. The head of the nail then catches upon the side wall of the orifice O at the head end of said orifice and stops the nail within the orifice and over the die P The walls of the orifice in the table 0, in which the die I is located, are made slightly beveling, so that as the punch P descends it will force the nail down upon the upper surface of the die P and thereby straighten the nail edgewise and curve it flatwise. The slides R and R again return under the influence of the cam R back into the position shown by the full lines in Fig. 11. About the time that the slides reach this position a mechanism, which I will hereinafter describe, raises the die P? by swinging it upon its fulcrum p, bringing the surface of the die even with the surface of the inclined table 0', and thereby elevating the nail above it. The lever B is then acted upon by means of the smallest recess in the cam R to impart to the slide R a short downward and upward stroke, in doing which the end of the link 1) comes behind the nail-head and strikes it ashort quick blow, to discharge the nail from the machine in case it should not fall down the inclined table of its own accord.

The mechanism for lifting the die I is more clearly shown in Fig. 15, and it consists of two swinging levers, Q and Q, and the connectingbar Q The bar Q} is jointed to the outer end of the bar Q, and this bar is actuated by being secured to the back side of the slide 1?. The

lower end of the bar Q? is connected with the the side of the inclined table 0 comes in con tact with the incline g on the bar Q and swings said arm outward sufficiently to disengage the lever Q from the upper step just so soon as the die I? has been elevated to the desired position. A spring, q, bears upon the lower end of the bar Q with a tendency to keep the steps in constant engagement with the lever Q.- The lever Q is adjustably connected to the slide I by means of set-screws (Z5, and the arm (f is adjustably secured by means of a slot-and-bolt connection, so that the point where the upper step will be disconnected from the lever Q may be readily adjusted as may be desired.

Many parts of my invention relate to the combination of mechanisms arranged successively and operated in the manner described, and when such combination of mechanism is new the particular details of the mechanism shown and described, or a part of them, may be changed for other mechanism accomplishing the same objects without materially changing said combinations.

Having thus described my invention, explained the principle thereof, and the best mode in which I contemplate applying that principle, I claim as my invention- 1. The combination of aseries of roller-dies for -cold-rolling the nail and an intermittentlyrevolving head containing jaws for receiving the nail from the roller-dies and presenting it successively for subsequent operations, substantially as described, and for the purpose specified.

2. The table A, provided with the nail-delivering orifice having inclines b upon two opposite sides, the distance between which is less than the width of the nail-head to be fed through said orifice,substantially as described, and for the purpose specified.

3. The combination of the reciprocating rack bearing spring-jaws, the stationary inclines d,and spring-actuated swinging jaws 6, bearing gages e, substantially as described, and for the purpose specified.

4. The combination of the slide or rack carrying spring-jaws c, mechanism for reciproeating said rack and opening the jaws to receive the nail, and a pair of roller-dies having nail-receiving recesses in their periphery,substantially as described, and for the purpose specified.

5. The combination of a table having a naildelivering orifice, a suitable conveyer underneath the table carrying spring-jaws to receive and hold the nail, and roller-dies having die-recesses in their periphery, substantially as described, and for the purpose specified.

6. The combination of two or more rollerdies, the spring-fingers arranged between said dies, a spring-pressed oscillating arm, and mechanism for reciprocating thespring-fingers between the pair of rollers and past the spring-pressed oscillating arm,su bstantially as described, and for the purpose specified.

7. The combination of the rack bearing spring-jaws 0, the stationary inclined lugs d, the swinging arms and gages e and e, a series of roller-dies, the series of fingers and Spring- IOC pressed oscillating ar-ms between the roller dies, "and mechanism Tor greeiprocating the fingers and rack, substantially as de'seribed,and

for the purpose specified.

s. The combination or the roller-dies, the intermittently-revolv'ing head, and the iiailholding fingers for conveyingthenail from the roller -dies to the intermittently revolving head, substantially as described, and for the purpose specified.

9. The combination of an intermittently-revolving head'bearing a series of'holding-jaws and an oscillating cam plate concentrically mounted with said head for opening-arid cl'osing the jaws, substantial-'ly as described, and for the purpose specified.

10. The combination of thej a'w's k kghavi-ng inclineson their outer ends a'n'd' passing"through the pnrp'ose specified.

upon the slide it, the'oscillati'ng plate bearing cam for acting upon the slide and mechanism for operating the cam plate and head, 1

substantially as described, and for the pur posespecified.

ing-ja'ws, and mechanism for trimming the point of the nail, substantially as described,

and for the purpose specified.

as described, and for the purpose specified.

14. The combination "of die and punch for trimming the point of the nail, the jaws -Hf and H, for gaging the point of the nail, "and I mechanism for operating the jaws to carry away the trimming after the mail has been gaged and trimmed, substantially asdescr'ib'e'd, and for the purpose specified.

ed, the stationary inclines H and H, and

mechanism for reciprocating the slide, 's'u'bstant'ial'ly as described, and for the purpose specified.

16. The combination of the intermittentlyrevolving head bearing holding-jaws,'the nailpoint trimming die and punch, and the incline m, for guiding the nail into the proper position between the die and punch, substan tially as described, and for the purpose speci- I dies, conveying-fingers, an intermittently-repoint upon one side,substantial-ly as-described, and for the purpose specified. 18. The combination of an intermittentlyrevolving head bearing holding-jaws, mechassess -an-is'm i'o'rtrimming' the points of the nailfa -shitable abradi'ng-wheel 'for grinding or poli'shin'g'thepointof the nail, and mechanism *for reciprocating the abrading-wheeliongitudinally over the nail-point, substantially as desribed, and for the purpose specified.

-19. The combination of the intermittently- "revolving head bearing holding jaws, an ab'rading-wheel mounted upon a suitable 'ear- Tiage, the oscillating plate having cam-slot K for reciprocating the carriage upon which the -'a"b'r ading-wheel is mounted, substantially as described, and for the purpose specified.

20. The combination of an intermittentlyrevolving head bearing holding-jaws, mechanism for trimming the point of the nail, mechanism-for polishing or grinding one side of the nail at the point, and mechanism 'for rasp'ing or filing the edge of the nail, substantia-lhyas described, and for the purpose speci- 21. The combination of the intermittentlyre'vol'ving head bearing holdingjaws, "the regage or rest L 'forthe nail, and mechanism 'for reciprocating the rasping or filing jaws both horizontally and vertically, substantially as described, and for the purpose specified.

12. The combination of a series of roller-' dies and their transferring mechanism, the intermittently-revolving head bearing hold- 22. The combination of filing or rasp'ing jaws L and L mounted with the face of one jaw projecting downward below the face of the'other, the guide or restL for the nail-point, the vertical reciprocating carriage L an oscil- F lating plate bearing camgroove, L", and the 13. The combination of the slide H, le'ver' H the slide-bar H angle-lever H", and gaging and conveying jaws H, substantially intermittently-revolving head bearing holding-jaws, substantially as described, and for the purpose-specified.

23. The combination of an intermittentlyrevolvi-ng head, mechanism for trimming-the point of the nail, mechanism for grinding or polishing one side thereof, mechanism for filing or "rasping the edges of the point, and mechanism'for polishing or grinding the 'oppositejflat'side of said nail'point, substantially 1 as described, and for the purpose specified. 15. The combination of the pivoted jaws H, the slide H upon which'they are im'ount- 24. The combination of an intermittentlyrevolving head carrying holding-jaws, mechanism'for trimming the point of the nail, "for grinding or polishing the two sides thereof,

IIO

mechanism for rasping its edges, the oscillating oam-plate for forcing open the jaws, and the knockout for removing the nail from-the jaws, substantially as described, and fo'rthe purpose specified. A

25. The combination of the intermittently" revolving'head bearing holding-jaws, mechanism. 'for trimming the point of the nail, for

. rasping'or filing its two edges and polishing 17. The combination of a series of roller-' or grinding its two fiat sides, mechanism'for removing the nail from the jaws, and mechanism for swaging the nail, substantially as described, and'for the purpose specified.

26. The combination of the knockout mechanism, the-'inclined'table O, and theswaging die and punch Pand P substantially as described, and for the purpose specified.

27. The combination of nail-holding jaws,

9o cipro'ca'ting rasping or filing jaws L and Lfthe for lifting the same, substantially as described, 1 5 and for the purpose specified.

30. The combination of the swagiugdie, the slides R and R connected by links 10 and p the lever B, and mechanism for imparting to said lever one long forward and backward 2o stroke, and then a shorter stroke for the purpose of knocking out the nail, substantially as described, and for the purpose specified.

EDWARD CROFT.

\Vitnesses:

OHAsW. GILLETTE, ROBERT E. HALL. 

